BCHT lead-free piezoelectric ceramics preparation and ultrasonic transducer fabrication via powder injection molding using simple binder

Can Wang; Bijun Fang; Xiangyong Zhao; Shuai Zhang; Xiaolong Lu; Jianning Ding

Journal of Materials Research and Technology (Nov 2020)

BCHT lead-free piezoelectric ceramics preparation and ultrasonic transducer fabrication via powder injection molding using simple binder

Can Wang,
Bijun Fang,
Xiangyong Zhao,
Shuai Zhang,
Xiaolong Lu,
Jianning Ding

Affiliations

Can Wang: School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
Bijun Fang: School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China; Corresponding author.
Xiangyong Zhao: Key Laboratory of Optoelectronic Material and Device, Department of Physics, Mathematics & Science College, Shanghai Normal University, Shanghai 200234, China
Shuai Zhang: School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
Xiaolong Lu: School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
Jianning Ding: School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China; School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China; Corresponding author.

Journal volume & issue: Vol. 9, no. 6
pp. 14818 – 14827

Abstract

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(Ba0.85Ca0.15) (Hf0.10Ti0.90)O3 (BCHT) ceramics were prepared via the powder injection molding process using paraffin as simple injection binder. Rather pure perovskite BCHT ceramics are obtained sintered at different temperatures, and complex multi-ferroelectric phases coexistence is confirmed by XRD measurement. Although the relative density is around 90%, well densified microstructural morphology is obtained without detectable gas pores. Curie temperature (TC) and dielectric constant maximum (εm) change irregularly with sintering temperature, and the BCHT ceramics present complex ferroelectric nature. All the ceramics show easy polarization characteristic, and the 1540 °C sintered BCHT ceramics present the largest piezoelectric constant d33 = 554.6 pC/N. Thickness mode ultrasonic transducer was fabricated based on the 1450 °C sintered BCHT ceramics, where the bandwidth @-6 dB (BW-6 dB) is 56.25% and sensitivity is −31.867 dB. PiezoCAD software simulation data present good agreement with the experimental results, showing promising applications for non-destructive testing using the BCHT lead-free ceramics.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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